Some intriguing pieces of art by Athens-based street artist Achilles who utilizes a series of wall murals to produce a 3D composite anatomical rendering of a face. The artist often utilizes perspective in unusual ways, more examples of which you can find on his Facebook page.
Curiosities
Mephistopheles and Margaretta, a double statue
The “Salar Jung Museum” is an art museum located at Dar-ul-Shifa, on the southern bank of the Musi River in the city of Hyderabad, Telangana, India. In this museum is exhibited a captivating double-figure wood sculpture built in the 19th century A.D. in France. It stands before a mirror and shows the facade of a nonchalant Mephistopheles and the image of a demure Margaretta in the mirror.
The wooden double statue of ‘Mephistopheles and Margaretta’ representing evil and good are characters from Goethe’s famous work ‘Dr.Faust’ (1808) and tells the story of love, heroism and tragedy.
Is seeing believing? This book will prove the contrary
I really enjoy communicate the mysteries behind the science of perception in a simple and clear manner with the use of instructive images.
We live in a “reallusive” world… Illusions are not totally unreal, because we feel them as they were real. Reality is also a kind of ‘illusion’. The outside world is mediated through our sense organs: vision, hearing, taste, touch and smell. All what we perceive and feel are just REPRESENTATIONS of reality, not the reality itself.
Children have a different way of looking at the world. So, writing and illustrating optical illusion books for kids is not an easy task, because they are less fooled by visual illusions than adults. This is due to the fact that brain’s capacity to consider the CONTEXT of visual scenes, and not just focus on SINGLE PARTS of scenes, develops very slowly.
My new work “Optical Illusions” will make you question: “is seeing believing?”… The brain is an amazing thing, but it doesn’t always get things right when it comes to sight. My book is here to explain why, with astounding images, baffling puzzles, and simple reveals.
Continue ReadingPERCEPTION OF BRIGHTNESS
In the example below, in the left column, you can see two apples—one green, one red—appearing as a single solid color with a black cross over them. Now, if we remove the thick black lines, each apple clearly appears divided into four quarters of different shades—even though they are exactly the same in both columns, with and without the black cross.
Here’s a trickier version: with the black grid in place, the large green square appears uniform. Take the grid away, and it turns into a full-on checkerboard…
This occurs because in our visual system there is a mechanism that enhances the contrast of the outline of an object relative to its background: it is called ‘lateral inhibition’. Thus, even small differences in brightness between adjacent zones or objects are deliberately increased by the brain to better distinguish them. So, when the brightness boundaries of the color zones are concealed, the cues the brain needs to trigger the lateral inhibition mechanism no longer exist and consequently we become “blind” to variations in color brightness. The illustrations above have been taken from my book “Drawing Optical Illusions” who was translated in many languages. The book is still available from Amazon.
This eye-catching, colorful book is designed to inspire those artists interested in optical illusions and as an invaluable reference tool for people who to wish to create them. In clear, easy steps, this book shows people how to design a range of original and classic optical illusions and even how to create their own personalized illusions.
Mondrian Meets… (My Tribute To Mondrian)
Here are two projects involving the geometrical-constructive art of Piet Mondrian, one of my preferred artists, the golden ratio and ϕ. For this purpose, I used the same color palette favored by Mondrian: yellow, red, blue, black and gray.
Mondrian meets Pythagoras and Fibonacci
In the first project, I used squares, that are proportional to each other by the golden ratio or ϕ, to prove the Pythagorean theorem as shown in the Zhoubi Suanjing (or Chou Pei Suan Ching – 周髀算經), one of the oldest Chinese mathematical texts (circa b.c. 200).
Helicoidal Trisection of a Cube
I really love puzzle with less pieces as possible and with a contemporary design… This neat three-piece puzzle has been invented by Robert Reid and designed by puzzle-master Oskar van Deventer. The fit of the puzzle is perfect, though assembly can be really challenging.
Real world illusion: the hollow cat
Because of his unique ginger and black coloring, this slim cat walking in the desert looks like to have a hole through his body!
KINECHROMATICS: A new three-framed animation
Kinechromatics (patent pending) is a method of my invention for animating static images through retinal persistence and controlled interactions between additive and subtractive color systems. It produces apparent motion by sequential color filtering across layered chromatic structures, rather than relying on conventional frame-by-frame animation.
The static image above is made of 3 layers having each a different subtractive primary color (magenta, yellow, or cyan) blended in ‘multiply mode’…
What happens if we alternately overlay this image with transparent colored acetate sheets, each carrying an additive primary color (red, green, and blue)?
Kinechromatics: red filter
When viewed through a red acetate sheet, the magenta and yellow components are largely absorbed, while the cyan layer remains visible, appearing black.
Kinechromatics: green filter
Through a green acetate sheet, the cyan and yellow components are suppressed, revealing the magenta layer in black.
Kinechromatics: blue filter
Through a blue acetate sheet, the magenta and cyan components are reduced, allowing the yellow layer to emerge but appear black due to its lack of transmission in the blue range.
The animated GIF below produces a continuous motion effect using only four elements: a static base image and three full-color layers blended in multiply mode.
Colored light can also replace acetate filters, creating a seamless optical animation. Stroboscopic illumination in primary colors has the added effect of merging perceptually into white light, making the transitions visually smooth. This approach can be particularly effective in museum or gallery installations, offering a direct demonstration of how color interaction is processed by human vision. The setup consists of a static image containing the Kinechromatics pattern, illuminated sequentially by red, green, and blue projection, as shown in the animation below.
For inquiries about exhibition or collaboration, feel free to contact me.
A second example, a simple animated dancing skeleton, demonstrates the same principle:
See also:
Frankenstein’s Dream: Hybrid Picture
This intriguing image is taken from my book “Curiopticals“. Look at Frankenstein from a certain distance – approximately 2-3 meters, or 7-8 feet – and you will see what he is dreaming about. This type of illusion is known as a cryptic or hybrid optical illusion, and is produced by merging two subjects with different resolutions. The result is that one subject is hidden or suggested in the ‘host’ image. Continue Reading
Breathing Hexagon
This is one of my earliest self-moving op art works (2003). Have a look at the static image above, don’t you have the feeling that the sets of lenticular shapes seem to expand?
This piece is accessible in various formats, including prints, posters, and t-shirts, through my art gallery shop.
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